Was the proclamation of 1763 enforced strongly?

Use the drop-down menu to complete the sentence. increased competition between producers of a good may lead to

List five north american and european countries in the non-communist bloc

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.